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The simplest wireless telegraph set consists of a means of generating and controlling a spark which sends out radio waves into the air, and a receiver or detector to detect the radio waves. Probably the simplest way to generate and control a spark is to use a switch (called a telegraph key) to turn on and off a buzzer which generates sparks. The simplest way to receive or detect the radio waves ge
Difficulty: High school
This cool astronomer's LED flashlight is really two flashlights in one. There are two power switches, each controlling an LED. An LED is a light emitting diode, which is an electronic device that requires very little current to run, so the batteries last a very long time. Also, LED's do not burn out.
Difficulty: High school
Over 170 years ago, a man named Laennec invented the first stethoscope. Before your class goes into the Institute's Giant Heart in the BioScience Exhibit stop and see it. It is a wooden tube about 1 inch in diameter and about 10 inches long. This experiment teaches you how to build your own homemade stethoscope and how to use it.
Difficulty: Elementary school
For those who dream of giant solar collectors which can generate temperatures high enough to melt steel, below is a method for building your own Solar Furnace of any size you desire.
Difficulty: High school
This is an AC electric generator which is capable of lighting up a tiny incandescent light bulb. The generator is made up of a hollow-ended cardboard box with a nail through the center, many turns of copper wire wound around the box, and four larger magnets clamped around the nail. When the nail and magnets are spun fast by hand, the little light bulb lights up dimly.
Difficulty: High school
From an old radio tube, some copper wire, and other inexpensive materials — total cost: roughly $20 — you can construct an X-ray machine that will make good pictures through an inch of wood. SAFETY MEASURES THAT YOU MUST OBSERVE. Notes on Röntgen's invention. Highlights of X-ray theory.
Difficulty: High school
I used a computer to make model peptides with repeating pentapeptide blocks of the type of [AAAAA](n) and [DAAAK](n), where n is the number of blocks; n=1-4. I modeled extended, strand, and helical structures. I measured and compared the stabilities of the peptides with and without energy minimization. I used the programs Insight II, IsisDraw, and DeepView.
Difficulty: High school
So you want your very own hovercraft. Well once again, Reeko is here to help. Of course it's only big enough to hold a mouse (maybe two if the first one scrunches down real low) but hey, we're not old enough for a driver's license anyway...
Difficulty: Middle school
Here's some general ideas and also some web sites to help you with ideas. These projects are really fun and easy! And you'll be amazed at the different types of cars you can build or buy out there!
Difficulty: Elementary school
How to build the best paper airplane in the world
Difficulty: Elementary school
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